Combined oil and grease gun.



F. J. BALL.

COMBINED OIL AND GREASE GUN.

APPLICATION FILED APR.17.1909.

99,465. Patented Nov. 9, 1909.

UNITED sn'rns PATENT OFFICE.

FREDERIC J. BALL, 0]? NEW YORK, Y.

Specification of Letters Patent.

COMBINED OIL AND GREASE GUN.

Patented Nov. 9, 1909.

Application filed April 17, 1909. Serial No. 490,549.

gun or as a grease gun, the above object being obtamed by a very simpledevice which is so arranged that the plunger may be moved along thebarrel of the gun either by a rotary movement of itsspirally groovedshank or by a longitudinal non-rotary move ment of the said shank.

A practical embodiment of my invention is represented in theaccompanying drawings.

Figure 1 represents the combined oil and grease gun in side elevation,Fig. 2 is a longitudinal central section through the same, the shankengaging nut being clamped to the .barrel of the gun by the lock nut forrendering the gun suitable for ejecting grease or heavy oils by a rotarymovement of the plunger shank, Fig. 3 is a detail longitudinal centralsection showing the shank engaging nut released from the barrel topermit the longitudinal movement of the plunger shank without rotatingthe same for rendering the gun suitable for ejecting lighter oils, Fig.4 is a transverse section taken in the plane of the line A-A of Fig. 3,Fig. 5 is a transverse section taken in the plane of the line BB of Fig.3, Figs. 6 and 7 are enlarged detail side and end views of the lock nut,Figs. 8 and 9, are detail end and sectional views of the shank engagingnut, and Fig. 10 is an enlarged outside view of the barrel cap, showingclearly the recess therein for receiving the shank engaging nut and.inner end of the 1 lock nut;

The barrel of the gun is denoted by 1 its rear cap by 2 and itsremovable front cap by 3. This front cap is provided with a removablenozzle 4 and is also provided with a rim 5 for facilitatin the screwingon and off of the front cap. T e plunger is denoted by 6 and itisprovided with a rearwardly extended spirally grooved shank 7 whichpasses centrally through the rear cap 20f the barrel. I

The rear end of the shank 7 is provided with a suitable handle 8.

A centrally arranged recess 9 is formed in the rear cap 2 around thehole 10 through which the plunger shank freely passes and within thisrecess 9 there is located the shank engaging nut 11, which nutis'provided with one or more spirally arranged lugs 12 which enter thespiral grooves in the shank 7. This-nut 11 may beclamped to or releasedfrom the cap by the lock nut 13,

which is herein shown as a thumb nut and is provided with an exteriorscrew threaded portion 14.- engaged'with an interior screw threadedport1on= 15 of the recess 9. This lock nut loosely surrounds the shank 7of.

the plunger.

When it is desired to use the gun as a grease gun, the lock nut 13 isscrewed inwardly to clamp the shank engaging nut 11 to the rear barrelcap 2. The plunger may then be moved along within its barrel by rotatingthe handle 8 and thereby the shank'7. This will permit the ejection ofthe grease or heavy 011 with exactness.

WVhcn it is desired to use the gun as an oil gun, the lock nut 13 isunscrewed sufliciently to release the shank enga in nut 11. A. directnon-rotary longitu in& movement of the shank may'then be obtained, asthe nut 11 will be permitted to rotate around the shank.- This willpermit the rapid dis- 7 charge of the light oil from the gun.

.When the gun is used as a grease gun, the

front cap 3 may be unscrewed from the outer end of the barrel forfilling the barrel with the grease or heavy oil. The front cap may thenbe replaced.

The nozzle 4 may be unscrewed from the front. can for the purpose ofinsertin a nozzle o another character if so desire What I claim is:

lkA combined oil and grease gun comprising a barrel, a plunger having aspirally grooved shank, a shank-engagin nut and a. lock nut "forclamping the shan nut toand releasing it from the barrel.

2. A combined oil and grease gun comprising a barrel having arecess inits rear end, a plunger having a spirally grooved shank engaging passingthrough said recess, a shank-engag- 7 111g nut located in the recessanda lock nut presence of two witnesses, this hvelft'hday havinga screwthreaded enga ement with of April 1909.

the Walls of the-recess for c amping the 5 shank enfi'aging nut to andreleasing it from Witnesses:

the barre V F. GEORGE-BARRY, In testimony, that'I claim the foi'egoingas HENRY THIEME.

FREDERIC J. BALL.

my invention, I have signed my name in

